PASCO PS-2164 Quad Pressure Sensor - Manual (Page 2)

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M o d e l N o . P S - 2 1 6 4 S e t u p
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depends on whether you will measure absolute pressure, dif-
ferential pressure, or gauge pressure:
Absolute Pressure The multi-sensor can measure up to
four absolute pressures simultaneously. One connection is
required for each measurement, and any of the pressure ports
may be used.
Differential Pressure The multi-sensor measures differ-
ential pressure by determining the pressure difference between
two ports. It can measure one or two differential pressures
simultaneously, with two connections required for each mea-
surement. Differential pressure can be measured between
ports 1 and 2 or between ports 3 and 4 (or both).
Gauge Pressure Gauge pressure is a special case of dif-
ferential pressure in which the second port of the pair is left
unconnected. The multi-sensor measures the pressure differ-
ence between the first port (connected to the apparatus) and
the second port (left open to the atmosphere). It can measure
up to two gauge pressures simultaneously, with one connec-
tion required for each measurement. Gauge pressure can be
measured by port 1 (with port 2 left open) and by port 3 (with
port 4 left open).
Sensor Setup
1. Cut a piece (or pieces) of tubing to the desired length.
2. Insert a quick-release connector into each piece of tubing.
3. Connect each piece of tubing to the multi-sensor by
inserting the quick-release connector into one of the pres-
sure ports and twisting clockwise.
4. Connect the free ends of the tubing to the apparatus using
connectors supplied with the apparatus or the tubing con-
nectors include with the Quad Pressure Sensor.
You can use the included tubing connectors to connect to a 5 mm (
inch) hole in a rubber stopper.
5. Connect the multi-sensor’s cable to your PASPORT inter-
face.
DataStudio Setup
If you are using a computer, connect the PASPORT interface
to the computer and start DataStudio. (Refer to the documen-
tation that came with your PASPORT interface for instructions
on connecting it to your computer.) In DataStudio, click the
Start button to begin data collection; click the Stop button to
stop data collection.
By default, DataStudio displays the absolute pressures mea-
sured by all four ports in a Graph display. To make the differ-
ential measurements available for display, click the Setup
button to open the Experiment Setup window; in that win-
dow, select 1-2 Differential Pressure or 3-4 Differential
Pressure. There you can also change the sampling rate (up to
1000 Hz) and select different units of measure. For more
instructions on using DataStudio, press F1 to open DataStu-
dio’s on-line help.
Xplorer GLX Setup
If you are using an Xplorer GLX in standalone mode, press
to start data collection. By default, the GLX displays the
absolute pressure from port 1 (Absolute Pressure 1) in units
of kPa, but you can select any of the other absolute or differ-
ential measurements for display. For more instructions on
using the Xplorer GLX, refer to the GLX Users’ Guide.
Multiple-measurement Alignment
When you are using multiple pressure ports, you may find that
their readings differ slightly when they are measuring the
same thing. In the example illustrated below, measurements
from four ports open to the atmosphere vary by about 0.2 kPa.
The multiple-measurement alignment procedure adjusts the
calibrations of the measurements so they agree more closely.
The procedure described here for DataStudio can also be performed
on the Xplorer GLX. See the Xplorer GLX Users’ Guide for detailed
instructions.
1. Click the Setup button to open the Experiment Setup
window. Click Calibrate Sensors to open the calibration
dialog box.
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QUAD PRESSURE SENSOR
PRESSURE SENSORS
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